package com.ynny.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Component
public class LoginFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
       String  username = exchange.getRequest().getQueryParams().getFirst("username");
       if (username == null ){
           System.out.println("用户名为空，请填入用户名");
           exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
           return exchange.getResponse().setComplete();
       }
           return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;//顺序
    }
}
